For those with FM fuel rails (uninstalled)
 

Can you check what length bolts are used to mount? I want to order some slightly longer versions to try to correct how tweaked this thing sits. I ordered flow force spacers to see if that'll help.

Also, does ID sell orings and lower injector cushions seperately? Are oem the same size or stacked taller?

I got O-rings from mcmaster. And bottom cushions from flow force.

https://www.mcmaster.com/#catalog/123/3546/=1723vqo

2mm wide. 8mm ID.

How would longer bolts help straighten it out? You need spacers.

I ordered the spacers already, the bolts the FM rail comes with barely even engages. I'm that worried, I also had to chase the threads because one popped out when trying to install.

I can guestimate it but because of space constraints, I can't easily stack washers if I choose bolts too long since the socket cap sits in a counter bore/slot

Ah. I have an uninstalled fuel rail without any bolts. I would just go to your local hardware store and match your old ones.

Crap, gotta fish through my "bolts bin"

edit: does M8x1.25 x 38mm sound about right?

So I'll need to increase this by about 2-3mm minimum to accomodate the spacers so that'd put me around the 40mm length. I have a feeling that FM sends 35mm length bolts. I'll measure when I get them out.

i was able to find some at the local lowes bolt bin. they also had plastic washers that are perfect for the spacers.